constraints of software engineering

Ngày tải lên: 21/02/2014, 09:20

... many software products • Software engineering has the objective of solving the problems of software by producing good quality, maintainable software, on time, within budget Definition of Software ... setup and operate the software system (Program is a subset of software, or Software is a superset of programs) Software applications • • • • System Software: a collection of programs which provide ... Attributes of Good Software • Maintainability Software must evolve to meet changing needs • Dependability Software must be trustworthy • Efficiency Software should not make wasteful use of • system...

Ngày tải lên: 22/03/2014, 18:20

... First-Time-Right Software 33 3.3 FUTURE SOFTWARE DEVELOPMENT TRENDS 35 3.3.1 Software Development Categories 35 3.3.2 Software Factories 36 3.4 SOFTWARE ... software development Chapter 1: Introduction 10 FUNDAMENTALS OF SOFTWARE ENGINEERING PROJECT MANAGEMENT Their own roles in a software development project Management techniques for improved software ... Contents FUNDAMENTALS OF SOFTWARE ENGINEERING PROJECT MANAGEMENT INTRODUCTION 1.1 SOFTWARE S GROWING IMPORTANCE • The days when computer software development could be handled as part of documentation...

Ngày tải lên: 29/03/2014, 23:20

... maintenance and quality of many software products • Software engineering has the objective of solving the problems of software by producing good quality, maintainable software, on time, within budget ... phí thực hợp lý Definition of Software Engineering • Software engineering is the establishment and use of sound engineering principles in order to obtain economically software that is reliable ... đáp ứng yêu cầu Software Consist of: • Programs • Documents • Procedures used to setup and operate the software system (Program is a subset of software, or Software is a superset of programs) Phần...

Ngày tải lên: 12/05/2014, 11:09

... Principal Associate, Software Engineering Management Associates (SEMA) Phillip Laplante, Professor of Software Engineering, Penn State University Evan Butterfield, Director of Products and Services ... these discussions of software engineering ethics and our dark side issues For whatever reason, the issues we raise are simply not yet on the radar of most authors of software engineering materials ... any discussions of ethical dilemmas in our field The second recent IEEE Computer coverage of software engineering ethics was actually a special issue devoted to the topic ( Software Engineering Ethics,”...

Ngày tải lên: 31/05/2014, 01:41

... subject of study; in software engineering it can be either a process to produce software or a software product In an article on research methods in software engineering [30] we nd three types of research ... Problems with software development Software development can often be challenging There are many examples of software projects that have failed The much-cited Standish report on software projects ... years of conferences like the International Conference on Software Engineering, The Software Engineering and Knowledge Engineering Conference, the International Conference on Product Focused Software...

Ngày tải lên: 16/01/2014, 16:33

... thời gian Biểu đồ diễn tiến bao gồm đối tợng, lifeline thể tồn đối tợng theo trục thời gian, focus of control thể thời gian đối tợng tồn để thực số hành động đó, thông điệp thể liên lạc đối tợng...

Ngày tải lên: 27/06/2014, 02:20

... principles-simplicity, clarity, generality-that form the bedrock of good software One can also overlook the value of tools and notations that mechanize some of software creation and thus enlist the computer in ... universal engineering concepts that are independent of language operating system, or programming paradigm This book comes from many years of experience writing and maintaining a lot of software, ... performance vary across a spectrum of languages Interfaces between users, programs, and parts of programs are fundamental in programming and much of the success of software is determined by how well...

Ngày tải lên: 13/08/2014, 08:20

... groups of about n/2 each the second level partitions two groups, each of about n/2 elements, into four groups each of about n/4 the next level partitions four groups of about n/4 into eight of about ... DATA STRUCTURES CHAPTER Often, though, we need to keep track of a variable but small number of things, and arrays can still be the method of choice To minimize the cost of allocation, the array ... main concerns of programming style: descriptive names, clarity in expressions, straightforward control flow, readability of code and comments and the importance of consistent use of conventions...

Ngày tải lên: 13/08/2014, 08:20

... great majority of software - Supplementary Reading Bob Sedgewick's family of Algorithms books (Addison-Wesley) is an excellent place to find accessible treatments of a variety of useful algorithms ... size of array is allocated, often at compile time Each element of the array is a list that chains together the items that share a hash value In other words, a hash table of n items is an array of ... program will read a piece of English text and use a Markov chain algorithm to generate new text based on the frequency of appearance of phrases of a fixed length The number of words in the prefix,...

Ngày tải lên: 13/08/2014, 08:20

... representative of the history of many bad interfaces It is a sad fact that a lot of quick and SECTION 4.3 A LIBRARY FOR OTHERS 91 dirty code ends up in widely-used software, where it remains dirty and often ... talk about issues that arise when designing software that must work with other software For example, there does not appear to be a standard definition of CSV so the implementation cannot be based ... large systems but the idea is relevant for any substantial piece of software It's not usually until you've built and used a version of the program that you understand the issues well enough to get...

Ngày tải lên: 13/08/2014, 08:20

... one of the most common terms in computing Why should software be so hard? One reason is that the complexity of a program is related to the number of ways that its components can interact, and software ... techniques for ensuring the integrity of a software design-program proofs, modeling, requirements analysis, formal verification-but none of these has yet changed the way software is built; they have been ... Development (Microsoft Press, 1996) is an excellent description of how to build software in teams, with an emphasis on the role of prototyping There are several interesting books on the design of graphical...

Ngày tải lên: 13/08/2014, 08:20

... version of f r e q that measures the frequencies of other types of data values, such as 32-bit integers or floating-point numbers Can you make one version of the program handle a variety of types ... combinations of overlap, direction, and alignment This is not exhaustive in the sense of testing all possible copy operations, but it is an exhaustive test of representatives of each kind of distinct ... in their software to check that incoming data are of a safe type and that the units are arriving at the right length If a unit of data is too long, it can overrun the "buffer"-the chunk of memory...

Ngày tải lên: 13/08/2014, 08:20

... parts of it will be paged out, and that will make its performance unacceptable We see this when new versions of software squander memory; it is a sad reality that software upgrades are often ... Knuth's profiling paper, "An Empirical Study of FORTRAN Programs," appeared in Software- Practice and Experience,1, 2, pp 105-133, 197 The core of the paper is a statistical analysis of a set of programs ... next occurrence of the first character of the pattern, and then called strncmp to see if the rest of the string matched the rest of the pattern Thus it skipped quickly over most of the message...

Ngày tải lên: 13/08/2014, 08:20

... succeed at EOF, but a valid input byte of OxFF will look just like EOF and terminate the loop prematurely So regardless of the sign of char, you must always store the return value of getchar in ... hardware, and thus the properties of floating-point arithmetic are reasonably well defined Order of evaluation In C and C++, the order of evaluation of operands of expressions, side effects, and ... behaviors is discouragingly long Sizes of data types The sizes of basic data types in C and C++ are not defined; other than the basic rules that sizeof (char) s i zeof (float) < s i z e o f (short)...

Ngày tải lên: 13/08/2014, 08:20

... combination of theory and engineering practice makes a lot of difference, an example of the benefit of specialized algorithms that we alluded to in Chapter A regular expression is a sequence of characters ... compilation In all of the examples above, it is important to observe the role of notation, the mixture of languages, and the use of tools The combination magnifies the power of the individual ... specifying a repetition of the single previous period or literal character This subset provides a large fraction of the power with a tiny fraction of the programming complexity of general expressions...

Ngày tải lên: 13/08/2014, 08:20

... 199 end of file, control-Z 134, 207 endofl i n e function CSV 96 end of string metacharacter $, 222 enum declaralion, 20 enum pl Perl program, 239 environment dependent bug 131 INDEX EOF value, ... implementing a wide range of tools and also guides the structure of the programs that write programs We are all comfortable in the large general-purpose languages that serve for the bulk of our programming ... message format, 114 message misleading 134 numeric patterns o f , 124 off-by-one 13, 124 141 order of evaluation, 9, 193 out of bounds 153 patterns, 120 Pentium floating-point 130 p r i n t f conversion,...

Ngày tải lên: 13/08/2014, 08:20

... TABLE OF CONTENTS CHAPTER TITLE PAGE TITLE PAGE i DECLARATION ii DEDICATION iii ACKNOWLEDGEMENT iv ABSTRACT v ABSTRAK vi TABLE OF CONTENT vii LIST OF FIGURES xii LIST OF TABLES xv LIST OF APPENDIXES ... Development (RAD) Model 10 3.2 Flow Chart Of Student 13 3.3 Flow Chart Of Admin 14 3.4 Flow Chart Of Lecturer 15 3.5 Flow Chart Of Researcher 16 3.6 Use Case Diagram Of MegaSeek Engine (MSE) 17 4.1 MSE ... User 71 4.38 Use Case Diagram Of Megaseek Engine (MSE) 71 4.39 Flow Chart Of Student 72 4.40 Flow Chart Of Admin 72 4.41 Flow Chart Of Lecturer 73 4.42 Flow Chart Of Researcher 74 5.1 Pie Chart...

Ngày tải lên: 10/12/2016, 13:33

... generic software systems or reusing existing software ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter Slide What is software engineering?   Software engineering is an engineering ... a software process? What is a software process model? ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter Slide FAQs about software engineering      What are the costs of software ... software engineering? What are software engineering methods? What is CASE (Computer A - ided Software Engineering) What are the attributes of good software? What are the key challenges facing software...

Ngày tải lên: 14/09/2012, 11:26

... development    Component-based software engineering (CBSE) is an approach to software development that relies on software reuse It emerged from the failure of object-oriented development to ... ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 19 Slide CBSE and design principles  Apart from the benefits of reuse, CBSE is based on sound software engineering design principles: ... 2004 Software Engineering, 7th edition Chapter 19 Slide 27 The component identification process Component search ©Ian Sommerville 2004 Component selection Component validation Software Engineering, ...

Ngày tải lên: 14/09/2012, 11:27